<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<!--块元素-->
<p>我是P标签</p>
<h1>我是H1标签</h1>

<!--行内元素-->
<a href="">我是a链接</a>
<strong>粗体</strong>
<em>斜体</em>

</body>
</html>